2.5D

2.5D ("two-and-a-half-dimensional"), ¾ perspective, and pseudo-3D are terms, mainly in the video game industry, used to describe either 2D graphical projections and similar techniques used to cause a series of images (or scenes) to simulate the appearance of being three-dimensional (3D) when in fact they are not, or gameplay in an otherwise three-dimensional video game that is restricted to a two-dimensional plane or has a virtual camera with a fixed angle. By contrast, games using 3D computer graphics without such restrictions are said to use true 3D.

Common in video games, these projections have also been useful in geographic visualization (GVIS) to help understand visual-cognitive spatial representations or 3D visualization.

The terms ¾ perspective and ¾ view trace their origins to portraiture and facial recognition, where they are used to describe a view of a person's face which is partway between a frontal view and a side view.

Computer graphics

Axonometric & oblique projection

Perspective

Perspective may refer to:

Vision and mathematics

Perspective (America album)

Perspective is the twelfth original studio album by American folk rock duo America, released by Capitol Records on September 21, 1984.

History

After several years of failed albums and singles, America returned to the Top Ten in 1982 with their Russ Ballard-penned single, "You Can Do Magic." In an effort to recreate this success, America had Ballard produce their 1983 album, Your Move. The results of that collaboration, however, were not altogether successful on an artistic or a commercial level. On America's next album, Perspective, the group went in a radically different direction.

The album, featuring three different producers - Matthew McCauley, Richie Zito and Richard James Burgess — and a multitude of prominent session musicians, represented America's foray into the synthesizer-laden music popular in the mid-1980s, including the use of DMX Drums. Band members Gerry Beckley and Dewey Bunnell were credited as executive producers on the project. It reached #185 on the Billboard pop album charts in November 1984, and was the last America album to make the charts at all until The Complete Greatest Hits did so in 2001. It was America's last studio album for Capitol Records, the last full-length studio album from the group until Hourglass was released in 1994, and the group's last major-label studio album until Here & Now in 2007.

Perspective (pharmacoeconomic)

Perspective in pharmacoeconomics refers to the economic vantage point of a pharmacoeconomic analysis, such as a cost-effectiveness analysis or cost-utility analysis. This affects the types of costs (resource expenditures) and benefits that are relevant to the analysis.

Five general perspectives are often cited in pharmacoeconomics, including institutional, third party, patient, governmental and societal. The author must state the perspective and then ensure that costs and valuations remain consistent with it throughout the study,explaining briefly the applicable nomenclature. This should allow prospective reader to get a better understanding, and a firmer grasp of the subject matter.

If, for example, a pharmacoeconomic study takes the institutional perspective, medication cost would be relevant to resource expenditures involved in therapy delivery. Since the institution (e.g. hospital) incurs this expense, it would be included. Other relevant costs include inventory carrying cost, pharmacy time to compound or dispense, nursing time to administer, disposables (e.g. medication cups or intravenous tubing) and allocated hospital overhead costs Valuation defines the currency reference that represents the resource expenditure associated with a given cost. The actual "dollar amount" to be attributed to the medication needs to be consistent with the perspective as well. Average wholesaler price (AWP) might not be considered an appropriate valuation of medication cost from an institutional perspective, if it does not represent the cost to the institution. Average acquisition cost would be more relevant.